diff --git a/packages/flutter_btleplug/pubspec.yaml b/packages/flutter_btleplug/pubspec.yaml
index f21c481..914a5e6 100644
--- a/packages/flutter_btleplug/pubspec.yaml
+++ b/packages/flutter_btleplug/pubspec.yaml
@@ -15,7 +15,7 @@ dependencies:
 
 dev_dependencies:
   ffi: ^2.0.1
-  ffigen: ^8.0.2
+  ffigen: ">=8.0.2 <10.0.0"
   flutter_test:
     sdk: flutter
   flutter_lints: ^2.0.0